Select Option
Home
A to Z
Search
Terms & Conditions
Support Information
Purchasing & Other Services
Video User Guides

tetradifon (Ref: ENT 23737)
** tedion ** sulfone ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION
for tetradifon

Description: An acaricide for use in horticultural crops to control a wide range of phytophagous mites

Introduction: circa 1955

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur -
Date inclusion expires Essential use only

Approved for use () or known to be used () in the following European countries:

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also registered in: Australia

General status:
Pesticide type Acaricide
Substance group Bridged diphenyl
Substance origin Synthetic
Mode of action Non-systemic with larvicidal and ovicidal activity. Acts by inhibiting oxidative phosphorylation.
CAS RN 116-29-0
EC number 204-134-2
CIPAC number 113
US EPA chemical code 079202
Chiral molecule No
Chemical formula C12H6Cl4O2S
SMILES Clc1cc(c(Cl)cc1Cl)S(=O)(=O)c2ccc(Cl)cc2
International Chemical Identifier key (InChIKey) MLGCXEBRWGEOQX-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C12H6Cl4O2S/c13-7-1-3-8(4-2-7)19(17,18)12-6-10(15)9(14)5-11(12)16/h1-6H
Structure diagram/image available? Yes
Molecular mass (g mol-1) 356.06
PIN (Preferred Identification Name) 1,2,4-trichloro-5-(4-chlorobenzene-1-sulfonyl)benzene
IUPAC name 4-chlorophenyl 2,4,5-trichlorophenyl sulfone
CAS name 1,2,4-trichloro-5-[(4-chlorophenyl)sulfonyl]benzene
Other status information OSPAR soc
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 12C
Fungicide Resistance Classification (FRAC) Not applicable
Physical state Colourless crystals
Related substances & organisms

Formulations:
Property Value
Example manufacturers & suppliers of products using this active
  • Chemtura
  • King Tech Corp
Example products using this active
  • Acaroil TD
  • Ovifac
  • Propachem Super
  • Tetrapaz
UK LERAP status No UK approval for use or outside scope
Formulation and application details Available in a variety of formulations including emulsifiable concentrates, wettable powders and smoke generators.


ENVIRONMENTAL FATE

for tetradifon

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 0.078 L3 Low
Solubility - In organic solvents at 20oC (mg l-1) 82000 C4 - Acetone -
255000 C4 - Chloroform -
10000 C4 - Methanol -
115000 C4 - Xylene -
Melting point (oC) 146 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 4.07 X 1004 Calculated -
Log P 4.61 L3 High
Bulk density (g ml-1)/Specific gravity 1.52 L3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 25oC (mPa) 3.20 X 10-05 C4 Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1) 1.46 X 10-04 L3 Non-volatile
Henry's law constant at 20oC (dimensionless) 6.19 X 10-08 Q2 Non-volatile
GUS leaching potential index 4.10 Calculated High leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value 1.44 X 10+00 Calculated -
Note -
Potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Value Source/Quality Score/Other Information Interpretation
Soil degradation (days) (aerobic) DT50 (typical) 112 C4 Persistent
DT50 (lab at 20oC) 112 C4 Persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note: -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable C2 Very persistent
Note -
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Value Source/Quality Score/Other Information Interpretation
Linear Kd - W3 Moderately mobile
Koc 100
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for tetradifon

Property Value Source/Quality Score/Other Information Interpretation
Bio-concentration factor BCF 190 P4 (Other literature Log BCF range 1.7-2.0 (R3)) Threshold for concern
CT50 (days) Not available -
Bioaccumulation potential - Calculated Moderate
Mammals - Acute oral LD50 (mg kg-1) > 14700 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 200 -
Birds - Acute LD50 (mg kg-1) > 5000 L3 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 880 L3 Lepomis macrochirus Low
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 2 L3 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) - - -
Algae - Acute 72 hour EC50, growth (mg l-1) > 100 L3 Raphidocelis subcapitata Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 11 C4 Moderate
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) > 5000 L3 Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 Harmless Dose: 96 g ha-1
AA3 Typhlodromus pyri
Harmless
% Effect - - -
Other arthropod (2) LR50 g ha-1 Harmless Dose: 96 g ha-1
AA3 Chrysoperla carnea
Harmless
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for tetradifon

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) > 14700 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 10000 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 3.0 L3 Rat, 4 hr -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational May be absorbed into the body by inhalation of dust
Examples of European MRLs (mg kg-1) Value -
Note For the EU pesticides database click here
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant Respiratory tract irritant Skin irritant Eye irritant

General human health issues Possible liver and kidney toxicant

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data

Handling issues:
Property Value Source/Quality Score/Other Information Interpretation
General Prevent generation of dust
Flammable
Tackle fires using a water spray or dry chemicals
CLP classification 2013 -
EC Risk Classification Xn- Harmful: R22
H - Handling risks: R10
EC Safety Classification -
WHO Classification U - Unlikely to present an acute hazard
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number 1993
Waste disposal & packaging Dispose of as chemical waste of low toxicity


TRANSLATIONS

for tetradifon

Language Name
English tetradifon
French tetradifon
German Tetradifon
Danish tetradifon
Italian tetradifon
Spanish tetradifon
Greek -
Slovenian tetradifon
Polish tereadifon
Swedish tetradifon
Hungarian -
Dutch -

Record last updated: Friday 01 August 2014
Contact: aeru@herts.ac.uk